The performance of the ICIP Ga-free superlattice longwave infrared photodetector for high operating temperature

•An interband cascade long wavelength infrared detector designed for high operating temperature (≥196 K) is presented.•The “Ga-free” InAs/InAsSb superlattice with highly doped p+/n+ tunneling junctions connecting adjacent stages was used.•The 3 - stage device reached detectivity ∼3 × 107 cmHz1/2/W at 300 K and 10% cut-off wavelength of ∼10.5 μm.•The device exhibits higher performance than multi-junction PVM HgCdTe detector optimized for 10.6 μm reaching ∼1.3 × 107 cmHz1/2/W, for 9.8 μm and 300 K.